propeller making process finnscrew
DESCRIPTION
TRANSCRIPT
![Page 1: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/1.jpg)
FINNSCREW SDN.BHD
PRESENTER:MOHD SYAHMI NURUDDIN
56267108111
ROZAIDI CHE RAZIB56267108112
- Propeller Making -
Advance Ship Resistance & Propulsion – LNB 21103
![Page 2: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/2.jpg)
INTRODUCTION
• Finnscrew Sdn.Bhd is a company that produce propeller for boat and ship used.
• Head office base at Finland.• One of their factory for propeller
making was located at Ipoh,Perak.• They produce all type of propeller
with different size and materials.
![Page 3: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/3.jpg)
PROPELLER MAKING PROCESS
![Page 4: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/4.jpg)
PROCESS FLOW• 9 step which are:
– Pattern making– Molding– Casting– Fatling– Machining– Grinding– Balancing– Surface finishing– Packaging and shipping
![Page 5: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/5.jpg)
• Pattern making is a process where from the design, the make a propeller blade template.
• The blade section is made from fiber glass and Putty.
PATTERN MAKING
![Page 6: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/6.jpg)
• Molding is a process to make a mould to get propeller shape.
• It have 2 section which are upper section and lower section.
• The mould was made from fine sand and hardener agent.
MOLDING
![Page 7: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/7.jpg)
• Casting is a process where a melting of propeller material such as Manganese Bronze will be put into mould to form a shape of propeller.
CASTING
![Page 8: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/8.jpg)
FATLING
• Fatling is a process where the product of propeller will be removing from the mould.
![Page 9: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/9.jpg)
MACHINING
• Process to remove the abundant part and drill the boss to make a hole on Hub/Boss.
![Page 10: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/10.jpg)
GRINDING
• To ensure that the blade angle is correct and follow the design.
• They use a template to check the angle.
![Page 11: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/11.jpg)
• At finnscrew sdn.bhd, they use static balancing method.
• The propeller will attach to a steel rod. Then,it will put on a roller table.
• If there have unbalance weight of blade, the more weight part will goes down.
• Worker will grind that part to reduce the weight to get balance with other blade
BALANCING
![Page 12: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/12.jpg)
SURFACE FINISHING
• After balancing process had done, the propeller will going into grinding section again for surface finishing.
• They use sand paper grinding disc to smooth the surface.
![Page 13: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/13.jpg)
PACKAGING & SHIPPING
• After surface finishing, the propeller is ready for packaging. They put it into wood box and cover it with plastic.
• Then, it is ready for export to Europe by shipping.
![Page 14: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/14.jpg)
QUALITY ASSURANCE
![Page 15: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/15.jpg)
• Quality is important thing for each propeller to ensure that the propeller is following the rule of IMO. The material must be following the standard of Shipping Classification Society to make it safe, reliable and durable.
QUALITY ASSURANCE
![Page 16: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/16.jpg)
• To ensure all of this happen, the company was use a special equipment to check the material content. A piece of product will be use for analysis.
![Page 17: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/17.jpg)
• Computer will analyze the content before display it onto monitor screen.
• Engineer will read the data and compared it with the manual spec for propeller that which type they built.
![Page 18: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/18.jpg)
BALANCING METHOD
![Page 19: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/19.jpg)
• There are two methods of propeller balancing – Static balancing– Dynamic balancing
BALANCING METHOD
![Page 20: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/20.jpg)
• Static unbalance is gravity at work.• If a propeller is placed between
centers on frictionless rollers the heavy or weighted portion will rotate to the bottom immediately.
• This is corrected by adding or removing weight from the propeller.
STATIC BALANCING
![Page 21: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/21.jpg)
• Dynamic balancing of a propeller isdone to provide for the lowest levelof vibration in its operating range.
• Professional Dynamic Balancinguse sensors to provide data to adigital processor during brief engineruns at 2000-2400rpm.
DYNAMIC BALANCING
![Page 22: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/22.jpg)
• Corrective weights measured to the1/10th gram are temporarily placedunder spinner screws or starter ringgear which is measured to ± onedegree.
![Page 23: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/23.jpg)
CAVITATION & CAVITATION NUMBER
![Page 24: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/24.jpg)
• Cavitation is defined as the phenomenon of formation of vapor bubbles of a flowing liquid in a region where the pressure of the liquid falls below its vapor pressure.
CAVITATION
![Page 25: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/25.jpg)
![Page 26: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/26.jpg)
• Cavitation calculates by using Euler Number.
• The Euler number is a dimensionless number used in fluid flow calculations. It expresses the relationship between a local pressure drop e.g. over a restriction and the kinetic energy per volume, and is used to characterize losses in the flow.
CAVITATION NUMBER
![Page 27: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/27.jpg)
• It is defined as:
![Page 28: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/28.jpg)
• Somewhat the same structure, but with a different meaning is the Cavitation number.
![Page 29: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/29.jpg)
• The Cavitation number is a dimensionless number used in flow calculations. It expresses the relationship between the difference of a local absolute pressure from the vapor pressure and the kinetic energy per volume, and is used to characterize the potential of the flow to cavitate.
![Page 30: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/30.jpg)
• It is defined as:
![Page 31: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/31.jpg)
PODDED PROPULSION
![Page 32: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/32.jpg)
• Podded propulsion is a marine propulsion units consisting of electrically driven propellers mounted on a steerable pod. It is also known as azipod (Azimuth Podded Propulsion System).
PODDED PROPULSION
![Page 33: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/33.jpg)
PODDED PROPULSION
![Page 34: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/34.jpg)
• The pod's propeller usually faces forward, as in this puller (or tractor) configuration, the propeller is more efficient.
PODDED PROPULSION
![Page 35: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/35.jpg)
• In addition, because it can rotate around its mount axis, the pod can apply its thrust force in any direction.
PODDED PROPULSION
![Page 36: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/36.jpg)
• Azimuth thrusters allow ships to be more maneuverable and enable them to travel backward nearly as easily as they can travel forward.
PODDED PROPULSION
![Page 37: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/37.jpg)
• The Azipod concept is not practical for use on warships because of damage control difficulties; integrating propulsion with rudder makes both easier to damage or destroy.
PODDED PROPULSION
![Page 38: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/38.jpg)
AZIPOD CONCEPT• In the traditional azimuth propulsion
system the (electric) motor is located inside the ship's hull and rotation is transferred to the propeller through a gearbox.
![Page 39: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/39.jpg)
AZIPOD CONCEPT• In the Azipod system the electric
motor is installed inside the pod. The propeller is connected directly to the motor shaft. No gearbox is required, thus providing greater efficiency.
![Page 40: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/40.jpg)
AZIPOD CONCEPT
• Electric power for the Azipod motor is conducted through slip rings that allow the Azipod to turn through 360 degrees.
![Page 41: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/41.jpg)
AZIPOD CONCEPT
• Because fixed pitch propellers are used in Azipods, power for Azipod is always fed through a variable-frequency drive that allows speed control of the propulsion motor.
![Page 42: Propeller making process finnscrew](https://reader034.vdocuments.mx/reader034/viewer/2022051818/54b954ad4a7959ea778b4590/html5/thumbnails/42.jpg)
THE END